.Seals Gaskets Metric Oil Hydraulic Shaft Mechanical O-ring MSO

Molded Rubber

Molded Rubber chart

MSO seals and gaskets ,inc specialized in molding all type of rubber our molding operation is fully staffed with over 350 people we specialize:

High Pressure Hydraulic & Pneumatic Seals, Rotary Shaft Seals, Bearing elements,

O'ring & various sections of Seals made in a wide range of Polymers.

Seals manufactured in these materials. Viton®, Silicon, Neoprene, Nitrile, Polyacrylic, EPDM, Polyurethane, PTFE, UHMWPE, TPE, Acetal, Fabric Reinforced Phenolic Resin etc.

Designing of new and improved sealing profiles combined with latest materials

The organization is proud of latest machinery, in house die making, well equipped testing lab, proven process and competent personnel.


Well equipped laboratory for the purpose of testing Properties of our polymers Endurance test of our seals	Injection Moulding for plastic and rubber mouldings


As part of its sustained growth plans, production activities, process planning, stock etc. is operating under computerized environment	Strict Quality Control of every individual seals Moulding Seals of large diameters

Stock of nearly 1,00,000 dies and 20,000 items is maintained to meet timely deliveries.
Customer satisfaction has been the first priority and continual improvement has been the tool since the management firmly believes that even the best can be improved.

MSO Seals & Gaskets, Inc. can provide molded rubber products to meet your needs out of the following :

Aflas 80 durometer	HNBR 85 durometer
Aflas 90 durometer	HNBR 90 durometer
Buna 50 durometer	Isoprene 65 durometer
Buna 70 durometer	Neoprene 50 durometer
Buna 80 durometer	Neoprene 70 durometer
Buna 85 durometer	Neoprene 70 durometer (Green)
Buna 90 durometer	Phenolic
Buna 100 durometer	Phenolic/fabric reinforced
Buna 70 & 90 durometer peroxide cure	Silicone 65 durometer (Brown)
Carboxylated Buna 80 durometer	Silicone 65 durometer (Black)
EPDM 85 durometer / FDA (87+3)	Silicone 70 durometer
EPDM Lagarde 85 durometer	Viton® 65 durometer (Pure)
EPDM 90 durometer	Viton® 70 durometer (food grade)
EPDM food grade (66+3)	Viton® 90 durometer (Peroxide cure)
EPDM/fabric 70 durometer	Viton® 90 durometer (Peroxide cure)
HNBR 70 durometer	Viton® Orange
HNBR 80 durometer	Viton® 65 durometer (Litharge)
	Viton®/fabric 70 durometer

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Chart

ACRYLONITRILE BUTADIENE RUBBER (NBR)

HARDNESS

SPAREAGE CODE

NBR 70°/75° SHORE 'A'

NBR 80°/85° SHORE 'A'

NBR 90°/95° SHORE'A'

NT4/b

NT5/b

NT6/b

OPERATING TEMPERATURE:- -40°C to +100°C

Commonly known as NITRILE or BUNA-N

Nitrile rubber is the sealing material most frequently used in Hydraulic & Pneumatic systems because of its excellent resistance to mineral oil based fluids, greases,water, hydrocarbon fules. It has good physical characteristics such as abrasion resistance and good compression set.

NBR is not suitable to Aromatic hydrocarbons, chlorinated hydrocarbons, automotivebrakes fluids, and some fire resistant hydraulic fluids.

CARBOXYLATED NITRILE RUBBER (XNBR)

HARDNESS

SPAREAGE CODE

XNBR 70°/75° SHORE 'A'

XNBR 80°/85° SHORE 'A'

XNBR 90°/95° SHORE'A'

NT23/b

NT24/b

NT25/b

OPERATING TEMPERATURE:- -30°C to +100°C

XNBR properties are similar to those of NBR polymers but they are characterised by improved abrasion behaviour in applications subjected to dynamic stress.

HYDROGENATED ACRYLONITRILE BUTADIENE RUBBER (HNBR)

HARDNESS

SPAREAGE CODE

HNBR 70°/75° SHORE 'A'

HNBR 80°/85° SHORE 'A'

HNBR 90°/95° SHORE 'A'

NT42/a

NT42/b

NT34

OPERATING TEMPERATURE:- -30°C to +140°C

HNBR has good heat resistance, oil resistance & resistance to number of aggressive chemicals. The material exhibits high mechanical strength and improved abrasion resistance. It also has superior resistance to weathering, ozone and hot air and very good resistance to technical oils, even in the presence of hydrogen sulphide and amines.

FLUORO RUBBER (FPM)

HARDNESS

SPAREAGE CODE

FPM 70°/75° SHORE 'A'

FPM 80°/85° SHORE 'A'

FPM 90°/95° SHORE 'A'

VT2/b

VT3/b

VT4/b

OPERATING TEMPERATURE:- -40°C to +220°C
FPM Rubber is commonly known by DU PONT trade name Viton®. The main characteristics of FPM is they are resistance to high temperatures & their chemical stability. They also display minimal weight loss in high vaccum & also its permeability to gases is low.

Viton® is compatible to fire resistant Hydraulic fluids, hot oils, greases,hydrocarbon, chlorinated hydrocarbons most organic acids, even at high concentrations and a number of organic compounds. It has excellent resistance to hot water and to steam.

FPM however is not resistant to methanol, keytones, esters and ethers.

SILICON RUBBER (VMQ) VINYL-METHYL-POLYSILOXANE

HARDNESS

SPAREAGE CODE

VMQ 70°/75° SHORE 'A'

VMQ 80°/85° SHORE 'A'

VMQ 90°/95° SHORE 'A'

SL4/b

SL5/b

SL6/b

OPERATING TEMPERATURE:- -70°C to +200°C
SILICON Rubber is characterised by high thermal resistance, good cold flexibility, good dielectric properties, very good resistance to oxygen and ozone attack. The main advantage is that it retains flexibility at very low temperatures and can withstand continues heating without hardening, making it suitable for low and high temperature applications.

SILICON compounds have poor strength and tear resistance. Their resistance to oils and fuels is poor and also concentrated acids and alkalis, water and steam at temperatures over 100° C

CHLOROBUTADINE RUBBER (CR)

HARDNESS

SPAREAGE CODE

CR 70°/75° SHORE 'A'

CR 80°/85° SHORE 'A'

CR 90°/95° SHORE 'A'

NP4/b

NP5/b

NP6/b

OPERATING TEMPERATURE:- -20°C to +100°C
CR is commonly known as NEOPRENE Rubber.

CR based compounds are characterised by excellent resistance to chemicals, to ageing, to weathering effects, and to ozone attack. Its resistance to swelling in mineral oils, greases and water is moderate.

CR compound are not resistant to aromatic compounds such as benzene, toulene, chlorinated hydrocarbons, esters, ethers and ketons.

ETHYLENE PPROPYLENE DIENE RUBBER (EPDM)

HARDNESS

SPAREAGE CODE

EPDM 70°/75° SHORE 'A'

EPDM 80°/85° SHORE 'A'

EPDM 90°/95° SHORE 'A'

EP4/b

EP5/b

EP6/b

OPERATING TEMPERATURE:- -40°C to +120°C

EPDM elastomer have very good resistance to ozone, ageing and weathering. Hence they are best suited for extruded profile sections and sealing strips. They have good resistance to swelling in hot water, steam, washing liquids, oxidising media, acids, bases, polar organic media, ketones, fire retardant hydraulic fluids& hydraulic brakes fluids.

EPDM is not suitable for use in mineral based oils or hydrocarbons, but in non-mineral automotive brake fluids and phosphate esters the swelling is minimal.

BUTYL RUBBER (IIR)

HARDNESS

SPAREAGE CODE

IIR 70°/75° SHORE 'A'

IIR 80°/85° SHORE 'A'

IIR 90°/95° SHORE 'A'

BU4/b

BU5/b

BU6/b

OPERATING TEMPERATURE:- -40°C to +120°C

IIR elastomers permeability to gases and water vapour. It has low and good electrical insulation properties. They have good resistance to brake fluids based on glycol, organic and inorganic acids and bases, hot water and steam upto 120° C.They have very good resistance to weathering and ageing.

ButylRubber is not suitable for use with mineral based oils and aromatic solvents.

NATURAL RUBBER (NR)

HARDNESS

SPAREAGE CODE

NR 70°/75° SHORE 'A'

NR 80°/85° SHORE 'A'

NR 90°/95° SHORE 'A'

NR5/b

NR6/b

NR7/b

OPERATING TEMPERATURE:- -30°C to +80°C

NATURAL Rubber exhibits high mechanical strengthand elasticity with very good low temperature characteristics. Because of its high mechanical strength, NR is frequently combined with fabric reinforcement for seals in applications where water is the hydraulic fluid. It has good resistance to acid and bases at low concentrations as well as alcohols.

NR is not resistant to mineral oils and greases, fire resistant hydraulic fluids,aromatic, aliphatic, and chlorinated hydrocarbons

STYRENE BUTADIENE RUBBER (SBR)

HARDNESS

SPAREAGE CODE

SBR 70°/75° SHORE 'A'

SBR 80°/85° SHORE 'A'

SBR 90°/95° SHORE 'A'

SB4/b

SB5/b

SB6/b

OPERATING TEMPERATURE :- -50°C to +100°C

SBR has good resistance to inorganic and organic acids, as well as alcohols , water and brake fluids based on glycol.

SBR is not resistance to mineral oils, lubricating greases, petroleum, aliphatic, aromatic and chlorinated hy

POLYACRLYIC RUBBER (ACM)

HARDNESS

SPAREAGE CODE

ACM 70°/75° SHORE 'A'

ACM 80°/85° SHORE 'A'

ACM 90°/95° SHORE 'A'

PC4/b

PC5/b

PC6/b

OPERATING TEMPERATURE:- -10°C to +125°C

The properties of POLYACRYLIC Rubber are midway between nitrile and fluorocarbon rubber. They have excellent resistance to mineral oils, hypoid oils and greases upto 125°C. They are resistant to ageing & flex cracking.

ACM is characterised by poor mechanical strength and resistant to water is poor.

FABRIC REINFORCED RUBBER (R/C)

HARDNESS	SPAREAGE CODE
NT R/C 80°/85° SHORE 'A' VT R/C 80°/85° SHORE 'A'	NT36(R/C) VT3/b(R/C)

For seals which are subjected to high pressure are impregnated by cotton fabric for improved extrusion resistance. The fabric structure forms micro lubricating pockets, resulting in lower friction values; thus helping to reduce wear. The fabric are coated with unvulcanised rubber solutions of NBR & FPM depending on the application of the seal.

Molded Rubber chart:

Polymer

Natural

SBR

EPDM

Nitrile

CR
Neoprene

ECO
Nitrile

Hypalon
CSM

Acrylic
ACM

VMQ Silicone

Viton®
FKM

HNBR/
HSN

Fluoro
silicone

International Code

DA /CA

BF /BG/ BK

BC/BE

DF/DH

FC/FE/GE

FVMQ/FK

Max Int Temp ºC

105º C

115º C

150º C

130º C

125º C

175º C

160º C

180º C

300º C

180º C

280º C

Max Cont Temp

75º C

85º C

130º C

100º C

95º C

150º C

130º C

150º C

205º C

150º C

200º C

Lowest Temp ºC

-60º C

-55º C

-50º C

-20º C

-35º C

-20º C

-25º C

-20º C

-60 to-80º C

-20º C

-40º C

-60º C

Oil Resistant

Yes

Weather Resistant

Yes

Hardness Range A

30-95º C

40-95º C

30-85º C

40-100º C

30-90º C

50-90º C

40-85º C

50-85º C

40-80º C

50-95º C

45-90º C

40-80º C

Oxidation

Fair

Excellent

Good

Very Good

Good

Excellent

Outstanding

Excellent

Ozone Weathering

Poor

Outstanding

Fair

Very Good

Good

Outstanding

Excellent

Very Good

Fair

Outstanding

Excellent

Oil Resistance ASTM Oil
No.1 @ 20 C

Poor

Fair

Good

Excellent

Good

Excellent

Good

ASTM Oil 1 @100C

Unsatisfactory

Unsa.

Good

Excellent

Good

Excellent

Good

ASTM Oil 3 @20 C

Unsatisfactory

Unsa.

Good

Excellent

Good

Excellent

Good

ASTM Oil 3 @ 100 C

Unsatisfactory

Unsa.

Good

Excellent

Good

Excellent

Fair

Good

ASTM Oil 3 @ 40 C

Unsatisfactory

Unsa.

Fair

Poor

Fair

Poor

Unsuitable

Excellent

Good

Solvent Resistance 20 C

Alcohol

Good

Poor

Good

Excellent

Acetone

Fair

Good

Unsa.

Fair

Unsa.

Fair

Unsuitable

Good

Benzene

Unsatisfactory

Unsa.

Good

Fair

Acids

Fair

Good

Very Good

Poor

Fair

Excellent

Good

Bases

Good

Fair

Good

Poor

Fair

Good

Physical Strength

Excellent

Good

Fair

Good

Fair

Good

Fair

Compression Set

Good

Fair to Good

Fair

Good

Very Good

Tear & Abrasion

Excellent

Good

Poor

Very Good

Poor

Resilience

Excellent

Good

Very Good

Good

Very Good

Fair

Poor

Good

Fair

Good

Gas Permeability

Poor

Fairly Low

Low

Fairly Low

Very Low

Good

Fair

Electrical Strength

Excellent

Good

Poor

Good

Fair

Excellent

Good

Poor

Good

Flame Resistance

Poor

Self-extinguishing

Fair

Good

Poor

Good

Self-Extinguishing

Poor

Good

Water Resistance

Very Good

Good

Excellent

Fair

Good

Very Good

Poor

Good

Very Good

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